JPS6242087U - - Google Patents

Info

Publication number
JPS6242087U
JPS6242087U JP12657886U JP12657886U JPS6242087U JP S6242087 U JPS6242087 U JP S6242087U JP 12657886 U JP12657886 U JP 12657886U JP 12657886 U JP12657886 U JP 12657886U JP S6242087 U JPS6242087 U JP S6242087U
Authority
JP
Japan
Prior art keywords
voltage
frequency
detection signal
reference voltage
oscillation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP12657886U
Other languages
English (en)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP12657886U priority Critical patent/JPS6242087U/ja
Publication of JPS6242087U publication Critical patent/JPS6242087U/ja
Pending legal-status Critical Current

Links

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  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Description

【図面の簡単な説明】
第１図は本考案による非金属磁性体検出器のブ
ロツク図、第２図は第１図の検出器に用いられた
電気回路の一例を示す。 記号の説明：１は発振回路、１ａは高周波コイ
ル、２は分周器、３は位相ロツクループ回路（Ｐ
ＬＬ回路）、４は定電圧発生電源、５はコンパレ
ータ、６は判定器をそれぞれあらわしている。

Claims (1)

  1. 【実用新案登録請求の範囲】 １ 検出コイルとして高周波コイルを用い少なく
    とも数キロヘルツ程度の発振周波数を有する発振
    回路と、この発振回路の発振周波数が減少したと
    きに検知信号を発する手段とを備え、前記検知信
    号が発せられたとき前記高周波コイルが非金属磁
    性体と近接状態になつたものと判断するようにし
    た非金属磁性体検知装置。 ２ 前記検知信号を発する手段が、前記発振周波
    数を直流電圧に変換する周波数電圧変換器と、基
    準電圧を発生する電源と、前記直流電圧と前記基
    準電圧の比較を行うコンパレータと、前記比較に
    より前記直流電圧が前記基準電圧より小さいとき
    に前記検知信号を発する判定器とから成ることを
    特徴とした実用新案登録請求の範囲第１項記載の
    非金属磁性体検知装置。
JP12657886U 1986-08-21 1986-08-21 Pending JPS6242087U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12657886U JPS6242087U (ja) 1986-08-21 1986-08-21

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12657886U JPS6242087U (ja) 1986-08-21 1986-08-21

Publications (1)

Publication Number Publication Date
JPS6242087U true JPS6242087U (ja) 1987-03-13

Family

ID=31020513

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12657886U Pending JPS6242087U (ja) 1986-08-21 1986-08-21

Country Status (1)

Country Link
JP (1) JPS6242087U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0355584U (ja) * 1989-09-30 1991-05-29

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4939462A (ja) * 1972-08-15 1974-04-12

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4939462A (ja) * 1972-08-15 1974-04-12

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0355584U (ja) * 1989-09-30 1991-05-29

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